EP 1264576 A3 20030806 - Medical broad band electromagnetic holographic imaging
Title (en)
Medical broad band electromagnetic holographic imaging
Title (de)
Verfahren und Vorrichtung zur medizinischen Bilderzeugung mittels breitbandiger elektromagnetischer Holographie
Title (fr)
Procédé et dispositif de visualisation médicale par hologramme électromagnétique à large bande
Publication
Application
Priority
US 87626201 A 20010606
Abstract (en)
[origin: US2002062074A1] A method of imaging an object, such as a diseased human heart or bone or malignant tumor, in a nontransparent medium, such as the human body, involves placing an array of transmitters and receivers in operational association with the medium. The transmitters generate a broad band harmonic (frequency domain) or pulse (time domain) primary electromagnetic field (EM) field, including the lower frequency portions of the EM spectrum, whose propagation is typically characterized by the diffusion phenomena, or by the combination of the diffusion and wave phenomena. The primary field propagates through the examined medium and interacts with the object to produce a scattered field, which is recorded by the receivers. The scattered EM field components measured by the receivers are applied as an artificial EM field to generate a backscattering EM field. Cross power spectra of the primary and backscattering fields (in the frequency domain) or cross correlation between these fields (in the time domain) produce a numerical reconstruction of an EM hologram. The desired properties of the medium, such as conductivity or dielectric permittivity, are then derived from this hologram.
IPC 1-7
IPC 8 full level
A61B 5/05 (2006.01); A61B 5/053 (2006.01); G01V 3/12 (2006.01); G03H 1/04 (2006.01); G03H 5/00 (2006.01)
CPC (source: EP US)
A61B 5/0044 (2013.01 - EP US); A61B 5/0536 (2013.01 - EP US); A61B 5/417 (2013.01 - EP US); G03H 1/04 (2013.01 - EP US); A61B 5/004 (2013.01 - EP US); A61B 5/05 (2013.01 - EP US); A61B 5/4509 (2013.01 - EP US)
Citation (search report)
- [XY] WO 9749329 A1 19971231 - UNIV UTAH RES FOUND [US], et al
- [Y] US 5363050 A 19941108 - GUO WENDY W [US], et al
- [A] US 5694938 A 19971209 - FENG SHECHAO C [US], et al
- [A] US 3887923 A 19750603 - HENDRIX CHARLES E
- [A] US 4755944 A 19880705 - GLASS CHARLES E [US]
- [A] US 5963658 A 19991005 - KLIBANOV MICHAEL VICTOR [US], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
US 2002062074 A1 20020523; US 6876878 B2 20050405; CA 2388981 A1 20021206; EP 1264576 A2 20021211; EP 1264576 A3 20030806; JP 2003177656 A 20030627
DOCDB simple family (application)
US 87626201 A 20010606; CA 2388981 A 20020605; EP 02012252 A 20020604; JP 2002165512 A 20020606